Remove exit call from sys_physmap_*

All callers are prepared to handle error if ERROR_PTR is returned.
The Manpage mentioning the respective return code is readapted.

Corresponding to flashrom svn r1744.

Signed-off-by: Niklas Söderlund <niso@kth.se>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
diff --git a/flashrom.8.tmpl b/flashrom.8.tmpl
index 5ede423..9f8af03 100644
--- a/flashrom.8.tmpl
+++ b/flashrom.8.tmpl
@@ -857,8 +857,7 @@
 .B BUGS
 for contact info.
 .SH EXIT STATUS
-flashrom exits with 0 on success, 1 on most failures but with 2 if /dev/mem
-(/dev/xsvc on Solaris) can not be opened and with 3 if a call to mmap() fails.
+flashrom exits with 0 on success, 1 on most failures but with 3 if a call to mmap() fails.
 .SH REQUIREMENTS
 flashrom needs different access permissions for different programmers.
 .sp